nanog mailing list archives

Re: WiFI on utility poles


From: Scott Helms <khelms () zcorum com>
Date: Thu, 10 Sep 2015 12:15:49 -0400

We should all be complaining, vociferously, about LTE-U.  I've seen the
tests and as it exists today LTE-U completely creams WiFi and is only
usable by someone who owns a LTE license.  WiFi APs will cohabitate fairly
well, even if they share the same channel, because WiFi is a listen before
transmitting protocol.  LTE and LTE-U is a centrally scheduled protocol and
doesn't have a back off mechanism.


Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------

On Thu, Sep 10, 2015 at 12:03 PM, Yury Shefer <shefys () gmail com> wrote:

And the same guys (NCTA) complain about LTE-U - how dangerous it is for
their s/business/WiFi


http://arstechnica.com/information-technology/2015/08/verizon-and-t-mobile-join-forces-in-fight-for-wi-fi-airwaves/



On Thu, Sep 10, 2015 at 8:00 AM, Scott Helms <khelms () zcorum com> wrote:

This sounds like a hypothetical complaint, AFAIK none of the members of
the
CableWiFi consortium are deploying APs outside of their footprint.  Since
most of the APs use a cable modem for their backhaul it's not really
feasible to be without at least one broadband option (the cable MSO) and
be
impaired by the CableWiFi APs.

Now, there is one potential exception to this I'm aware of which is
Comcast's Xfinity on Campus service, but I'd expect the number of colleges
they're servicing that aren't already getting cable broadband service to
approach zero.


http://www.philly.com/philly/business/20150909_Comcast_streams_onto_college_campuses.html

https://xfinityoncampus.com/login


Having said all of that, I'd agree that a good radio resource management
approach would benefit all of us, including the CableWiFi guys.

http://www.cablelabs.com/wi-fi-radio-resource-management-rrm/


Scott Helms
Vice President of Technology
ZCorum
(678) 507-5000
--------------------------------
http://twitter.com/kscotthelms
--------------------------------

On Thu, Sep 10, 2015 at 10:52 AM, Jared Mauch <jared () puck nether net>
wrote:


On Sep 10, 2015, at 9:00 AM, Mike Hammett <nanog () ics-il net> wrote:

5 GHz noise levels affecting people whose primary means of Internet
access is via fixed wireless .


This is a huge deal for those people like myself that depend on fixed
wireless for access at home because there is no broadband available
despite
incentives given by cities and states and the federal government.

The local WISPs are good at coordinating access in these ISM bands
amongst
themselves but when someone appears with a SSID without doing a peek at
the
spectrum (note: not a site survey, but actual spectrum view w/
waterfall,
as site survey only checks for the channel width that the client radio
is
configured for, not al the 10, 15, 8, 30mhz wide variants).

It’s just poor practice to show up and break something else because you
can’t be bothered to notice the interference or noise floor you
created.  I
suspect the hardware that Comcast is using doesn’t notice this
interference
or adjacent channel issues.  With the FCC aiming to let cell carriers
also
clog the 5ghz ISM band it’s only going to get worse.

- Jared




--
Best regards,
Yury.



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